On the Folders tab, looking at the file tree, selecting (clicking to highlight) a folder displays the contents of that folder in the pane at the right. (Do not confuse this with checking/unchecking the "include this one" box to the left of the folder icon in the tree).
Multiple files and folders displayed in the right pane may then be selected (highlighted) using shift and control keys while clicking.
Now that I have several folders selected in the contents pane, I want a way to check the corresponding "include this one" boxes back in the folder tree.
Somethings could be put on the right click menu for the selected item, "include selected", "exclude selected", "invert include/exclude for selected".
Perhaps a keyboard key (space?) could toggle the check boxes of the selected items.
I hope this is a good enough description of the problem. I'd gladly add more (a example from a screen shot?) if you can ask me some question.
Thanks!